Mostly, in the past, consecutive numbered pistols had a certain WOW factor. That is defined as looking a pair of guns, and saying "Wow,
lookit dat ... consecutive numbers." That's about it. There is no mechanical advantage. There is no reason to think the guns were
assembled by the same person. Or, even on the same day or in the same month..
I have several sets of consecutively numbered sets of handguns. It's really neat. Beyond being really neat, meaningless. Add value??? Sure, maybe .. 2 - 3 Bucks.
If your going to "conserve" them as collector items, Don't shoot either of them. If your going to play with them, don't worry about "collector" value. Just have fun with them. The great "surge" in price for USFA that happened when USFA went belly up has ended.
Prices are now returning to "sane." Those who previously bought USFA as an investment have been losing their butts. It will be
several generations before USFA prices again hit "insane" again, if ever.
Coffinmaker